EP2991610B1 - Verfahren zur herstellung eines rohlings sowie rohling - Google Patents

Verfahren zur herstellung eines rohlings sowie rohling Download PDF

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Publication number
EP2991610B1
EP2991610B1 EP14720971.2A EP14720971A EP2991610B1 EP 2991610 B1 EP2991610 B1 EP 2991610B1 EP 14720971 A EP14720971 A EP 14720971A EP 2991610 B1 EP2991610 B1 EP 2991610B1
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EP
European Patent Office
Prior art keywords
blank
glass
mpa
additive
li2o
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EP14720971.2A
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German (de)
English (en)
French (fr)
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EP2991610A1 (de
Inventor
Stefan Fecher
Heiner HÖRHOLD
Udo Schusser
Markus Vollmann
Martin Kutzner
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Dentsply Sirona Inc
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Dentsply Sirona Inc
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Publication date
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Priority to EP16189583.4A priority Critical patent/EP3124010A1/de
Publication of EP2991610A1 publication Critical patent/EP2991610A1/de
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/0003—Making bridge-work, inlays, implants or the like
    • A61C13/0022—Blanks or green, unfinished dental restoration parts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/802—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics
    • A61K6/818—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics comprising zirconium oxide
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/831—Preparations for artificial teeth, for filling teeth or for capping teeth comprising non-metallic elements or compounds thereof, e.g. carbon
    • A61K6/833—Glass-ceramic composites
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/06—Other methods of shaping glass by sintering, e.g. by cold isostatic pressing of powders and subsequent sintering, by hot pressing of powders, by sintering slurries or dispersions not undergoing a liquid phase reaction
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/10—Forming beads
    • C03B19/1005—Forming solid beads
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/10—Forming beads
    • C03B19/1005—Forming solid beads
    • C03B19/1055—Forming solid beads by extruding, e.g. dripping molten glass in a gaseous atmosphere
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/10—Forming beads
    • C03B19/1095—Thermal after-treatment of beads, e.g. tempering, crystallisation, annealing
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B32/00—Thermal after-treatment of glass products not provided for in groups C03B19/00, C03B25/00 - C03B31/00 or C03B37/00, e.g. crystallisation, eliminating gas inclusions or other impurities; Hot-pressing vitrified, non-porous, shaped glass products
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B32/00—Thermal after-treatment of glass products not provided for in groups C03B19/00, C03B25/00 - C03B31/00 or C03B37/00, e.g. crystallisation, eliminating gas inclusions or other impurities; Hot-pressing vitrified, non-porous, shaped glass products
    • C03B32/02—Thermal crystallisation, e.g. for crystallising glass bodies into glass-ceramic articles
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
    • C03C10/0018—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing SiO2, Al2O3 and monovalent metal oxide as main constituents
    • C03C10/0027—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing SiO2, Al2O3 and monovalent metal oxide as main constituents containing SiO2, Al2O3, Li2O as main constituents
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/097—Glass compositions containing silica with 40% to 90% silica, by weight containing phosphorus, niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C4/00—Compositions for glass with special properties
    • C03C4/0007—Compositions for glass with special properties for biologically-compatible glass
    • C03C4/0021—Compositions for glass with special properties for biologically-compatible glass for dental use

Definitions

  • WO 2012/080513 A1 is a method for producing dental moldings from porous glass that does not have crystalline components.
  • the density of the blank is between 50% and 95% of the theoretical density of a densely sintered blank.
  • Monolithic dental molded parts such as crowns, partial crowns, bridges, inlays or onlays are produced from a blank in this regard by means of milling, with dry processing taking place.
  • Lithium disilicate glass ceramics can be found, which are used for the production of dental molded parts.
  • the corresponding glass ceramics should have good mechanical and optical properties.
  • a blank made of a lithium silicate glass ceramic is known, from which dental molded parts are produced.
  • the ceramic necessarily contains a trivalent metal oxide from the group Y 2 O 3 , La 2 O 3 , Yb 2 O 3 , Bi 2 O 3 and mixtures thereof.
  • the glass ceramic is essentially free of K 2 O and Na 2 O.
  • the US 6 455 451 B1 describes a blank for producing a dental molded part, the blank made of glass ceramic containing 35-60% by volume of lithium silicate crystals.
  • a blank for producing a dental molded part is known, the blank made of glass ceramic containing a proportion of more than 10% by volume of lithium silicate crystals.
  • a blank for the production of a dental molding is in the US 2008/120 994 A1 described.
  • the blank made of glass ceramic has a share of 60-80% by volume of lithium silicate crystals.
  • a blank for producing a dental molded part with a density between 50 and 65% of the theoretical density is from the DE 10 2010 056 037 A1 known.
  • Glass ceramics based on a Li2O-ZrO2-SiO2 system are also made J. Am. Ceram. Soc. 81 (3), 777-780 (1998 ) known.
  • the object of the present invention is to provide a method for producing dental molded parts with good mechanical properties.
  • the invention is also characterized in particular by a method for producing a dental molded part, such as inlay, onlay, crown or bridge, comprising the method steps Preparation of a melt of a composition in% by weight: SiO2 46.0 - 72.0 Li2O 10.0 - 25.0 ZrO2 6.5 - 14.0 P2O5 1.0 - 10.0 Al2O3 0.1 - 8.0 K2O 0.1 - 5.0 CeO2 0.1 - 4.0 B2O3 0.0 - 4.0 Na2O 0.0 - 4.0 Tb4O7 0.0 - 2.5 and 0.0 to 4.0 of at least one additive, Producing a glass frit by atomizing the melt and quenching in a medium, - if necessary, producing glass powder particles from the glass frit with a particle size distribution d 90 ⁇ 80 ⁇ m, - Crystallization of lithium silicate crystals with a volume
  • the glass frit without first being ground in order to obtain glass powder particles, is subjected to a heat treatment to form lithium silicate crystals, or that the frit is first ground, that is, glass powder particles are produced in order to then carry out the heat treatment, so that glass ceramic powder particles are then present.
  • the feature “pressing the glass ceramic powder particles into a blank” consequently includes the glass ceramic powder particles produced according to the process alternatives.
  • the melt has a composition in% by weight: SiO2 49.0 - 69.0 Li2O 11.5 - 24.0 ZrO2 7.0 - 13.5 P2O5 1.5 - 9.0 Al2O3 0.2 - 7.5 K2O 0.2 - 4.5 CeO2 0.2-3.5 B2O3 0.0 - 3.5 Na2O 0.0 - 3.5 Tb4O7 0.0 - 2.0 and 0.0 to 4.0 of at least one additive.
  • the melt preferably consists of a composition in% by weight: SiO2 52.0 - 66.0 Li2O 12.0-22.5 ZrO2 7.5 - 13.0 P2O5 2.0 - 8.5 Al2O3 0.3 - 7.0 K2O 0.3 - 4.0 CeO2 0.3 - 3.5 B2O3 0.0 - 3.0 Na2O 0.0 - 3.0 Tb4O7 0.0 - 2.0 and 0.0 to 4.0 of at least one additive.
  • composition of the melt with a composition in% by weight: SiO2 55.0 - 63.0 Li2O 12.5-21.5 ZrO2 8.0 - 12.0 P2O5 2.5 - 8.0 Al2O3 0.4 - 6.5 K2O 0.4 - 4.0 CeO2 0.5-3.0 B2O3 0.0 - 3.0 Na2O 0.0 - 3.0 Tb4O7 0.0 - 2.0 and 0.0 to 4.0 of at least one additive.
  • the melt has a composition in% by weight: SiO2 58.0 - 60.0 Li2O 13.5 - 20.5 ZrO2 8.5 - 11.5 P2O5 3.0 - 7.5 Al2O3 0.5 - 6.0 K2O 0.5-3.5 CeO2 0.5 - 2.5 B2O3 0.0 - 3.0 Na2O 0.0 - 3.0 Tb4O7 0.0 - 1.5 and 0.0 to 4.0 of at least one additive.
  • the at least one additive is at least one additive from the group of color pigment, fluorescent agent.
  • the additive is at least one oxide from the group BaO, CaO, MgO, MnO, Er2O3, Gd2O3, Pr6O11, Sm2O3, TiO2, V2O5, Y203 or contains such an oxide.
  • the blank is annealed after the first heat treatment and before the mechanical processing at a temperature T 3 with 750 ° C.
  • the relevant heat treatment steps ensure that the glass powder crystallizes to the required extent to form lithium silicate crystals, and at the same time results in a small pore size and thus dense packing, so that problem-free mechanical processing is possible, among other things, to achieve filigree areas.
  • the crystal phase lithium silicate includes lithium metasilicate and in particular lithium disilicate.
  • the glass ceramic powder particles are first pressed axially in order to produce a blank in disk geometry and then isostatically compressed after being introduced into an envelope such as bags made of polyethylene coated on the inside, the compacting being in particular at a pressure pn with 250 MPa ⁇ pn ⁇ 350 MPa a time t 4 with 5 sec ⁇ t 4 ⁇ 30 sec, in particular 5 sec ⁇ t 4 ⁇ 15 sec.
  • the glass ceramic powder is introduced into a tubular mold, in particular made of polyurethane, and is then quasi-isostatically pressed.
  • the following press times and parameters should be taken into account.
  • a slow increase in pressure is initially preferred in order to distribute the filled glass ceramic powder evenly in the mold. Then the pressure can be quickly increased to its maximum value. After reaching the maximum pressure, it is kept constant for the holding time.
  • a phase of rapid pressure relief follows, in which the pressure is reduced to 10% of the maximum value. Of the The overpressure is then completely reduced to avoid cracks in the glass ceramic blank.
  • Preferred milling parameters for rough machining are: Cutter diameter: 2 to 5 mm, especially 2 to 3 mm feed: 500 to 4000 mm / min, especially 2000 to 3000 mm / min Side delivery ae: 0.2 to 3 mm, especially 1 mm to 2 mm Depth infeed ap: 0.1 to 2 mm, especially 0.5 mm to 1 mm Router speed: 10,000 to 50,000 rpm, especially 10,000 to 20,000 rpm. Carbide cutters should be preferred as cutters.
  • Cutter diameter 0.3 to 1.5 mm, especially 0.5 to 1.0 mm feed: 300 to 2000 mm / min, especially 800 to 1500 mm / min
  • Side delivery ae 0.2 to 0.6 mm, especially 0.1 mm to 0.2 mm
  • Depth infeed ap 0.05 to 0.3 mm, especially 0.1 mm to 0.15 mm
  • Router speed 20,000 to 60,000 rpm, particularly 25,000 to 35,000 rpm.
  • binders such as. B. cellulose ether with a weight fraction of up to 5%.
  • the blank that is to say its glass ceramic particles
  • silica or alkali silicate solution water glass
  • SiO 2 bridges form between the glass particles, which increase the strength and thus facilitate the subsequent mechanical processing, which includes CAD / CAM processing.
  • the free SiO 2 diffuses into the glass ceramic, whereby an increase in strength can be achieved.
  • the temperature during the pre-sintering of the compacted glass powder, i.e. the blank in the form of the pressed glass body should be in the range between 500 ° C and 950 ° C, preferably between 600 ° C and 700 ° C.
  • the outer geometry of the pressed glass ceramic body can be disk-shaped or plate-shaped or rod-like or cylindrical, the cross-sectional geometry being freely selectable.
  • the volume of the blanks can be between 1 cm 3 and 160 cm 3 .
  • the finished dental work is sintered through in a suitable sintering furnace, taking into account a suitable temperature / time cycle.
  • the sintering can be carried out in a temperature range between 700 ° C and 1100 ° C, preferably in the range between 850 ° C and 950 ° C.
  • the total cycle time is less than 2 hours, preferably less than 1 hour. Because of the crystalline content, it is not necessary for the preform to be supported. Rather, the preform z. B. stored on an Al 2 O 3 cotton wool in the sintering furnace.
  • the preferred temperature / time cycle should be stated: standby temperature 500 ° C, rate of increase 50 ° C / min to 90 ° C / min to 850 to 900 ° C, holding time 1 to 5 min, then cool slowly.
  • the slowest cooling level should preferably be selected for cooling.
  • the only figure shows a course of the pressure over time when pressing a blank.
  • a blank is used according to the invention which consists of compressed glass ceramic powder.
  • a powder is first melted and a glass frit is produced from the melt, which can have preferred compositions below: SiO2 49.0 - 69.0 Li2O 11.5 - 24.0 ZrO2 7.0 - 13.5 P2O5 1.5 - 9.0 Al2O3 0.2 - 7.5 K2O 0.2 - 4.5 CeO2 0.2-3.5 B2O3 0.0 - 3.5 Na2O 0.0 - 3.5 Tb4O7 0.0 - 2.0 and 0.0 to 4.0 of at least one additive.
  • the glass melt has a composition in% by weight: SiO2 49.0 - 69.0 Li2O 11.5 - 24.0 ZrO2 7.0 - 13.5 P2O5 1.5 - 9.0 Al2O3 0.2 - 7.5 K2O 0.2 - 4.5 CeO2 0.2-3.5 B2O3 0.0 - 3.5 Na2O 0.0 - 3.5 Tb4O7 0.0 - 2.0 and 0.0 to 4.0 of at least one additive.
  • the Galsschmelze preferably consists of a composition in% by weight: SiO2 52.0 - 66.0 Li2O 12.0-22.5 ZrO2 7.5 - 13.0 P2O5 2.0 - 8.5 Al2O3 0.3 - 7.0 K2O 0.3 - 4.0 CeO2 0.3 - 3.5 B2O3 0.0 - 3.0 Na2O 0.0 - 3.0 Tb4O7 0.0 - 2.0 and 0.0 to 4.0 of at least one additive.
  • composition of the glass melt with a composition in% by weight: SiO2 55.0 - 63.0 Li2O 12.5-21.5 ZrO2 8.0 - 12.0 P2O5 2.5 - 8.0 Al2O3 0.4 - 6.5 K2O 0.4 - 4.0 CeO2 0.5-3.0 B2O3 0.0 - 3.0 Na2O 0.0 - 3.0 Tb4O7 0.0 - 2.0 and 0.0 to 4.0 of at least one additive.
  • the at least one additive is at least one additive from the group of color pigment, fluorescent agent.
  • the additive is at least one oxide from the group BaO, CaO, MgO, MnO, Er2O3, Gd2O3, Pr6O11, Sm2O3, TiO2, V2O5, Y203 or contains such an oxide.
  • the corresponding mixture of starting materials e.g. B. in the form of oxides and carbonates, is then in a suitable crucible made of refractory material or precious metal alloy at a temperature between 1350 ° C and 1600 ° C for a period between 1 h to 10 h, in particular over a period of 4 h to 7 h melted at a temperature of 1540 ° C. Homogenization takes place simultaneously or subsequently, e.g. B. by stirring.
  • the liquid glass produced in this way is then fed to a nozzle which is preferably set in vibration and which is itself set to a temperature preferably in the range between 1250 ° C. and 1450 ° C., in particular at 1310 ° C.
  • the nozzle can have a diameter between 1 mm and 2 mm.
  • the oscillation frequency of the nozzle can be between 40 Hz and 60 Hz, in particular in the range of 50 Hz.
  • the liquid glass is then quenched in a suitable medium such as liquid such as water or high temperature cotton wool.
  • the quenched glass frit thus produced is then dried.
  • a sieving a sieve with a mesh size between 50 microns and 500 microns can be used. If necessary, further grinding, e.g. B. by a jet mill or an attrition mill.
  • d 90 or d 50 means that 90% or 50% of the particles present have a diameter which is smaller than the specified value or in the range.
  • the frit obtained after melting or the pre- or final-ground powder is subjected to a crystallization step.
  • a first heat treatment step the frit or powder is subjected to a temperature T 1 between 500 ° C. and 750 ° C. over a time t 1 between 5 minutes and 120 minutes.
  • the first heat treatment step can also take place in two stages, ie the first Heat treatment step 640 ° C, preferably 660 ° C for 60 min and 750 ° C for 40 min.
  • tempering This is then preferably followed by a further heat treatment in the form of tempering, the temperature T 3 to be selected being between 750 ° C. and 900 ° C.
  • the tempering step is carried out over a period of time t 3, in particular between 5 min and 30 min.
  • the glass ceramic particles are then pressed, suitable pressing methods being used depending on the geometry to be produced, in particular axial or isostatic pressing or combinations thereof.
  • the compression takes place to such an extent that the density of the blank corresponds to 30% to 60% of the theoretical density of the blank material of approximately 2.64 g / cm 3 .
  • the blank should have a density of approximately 50% of the theoretical density.
  • the glass ceramic powder is preferably subjected to a pressure between 50 MPa and 400 MPA, in particular between 100 MPa and 200 MPa.
  • the single figure shows an example of a course of the pressure over time when pressing a blank.
  • a first phase P1 the pressure is increased from 0 with a pressure build-up of, for example, 15 MPa / sec to a pressure of, for example, 30 MPa.
  • a second phase P2 the pressure is increased from 30 MPa with a pressure build-up of 100 MPa / sec to a pressure of approx. 200 MPa.
  • the pressure is kept constant at a value of approximately 200 MPa for a holding time of approximately 10 seconds.
  • Cutter diameter 2 to 5 mm
  • 2 to 3 mm feed 500 to 4000 mm / min, especially 2000 to 3000 mm / min
  • Side delivery ae 0.2 to 3 mm
  • Depth infeed ap 0.1 to 2 mm
  • Router speed 10,000 to 50,000 rpm, especially 10,000 to 20,000 rpm.
  • the preform is placed on a fireproof base such as cotton wool or on scale-free metal layers.
  • a fireproof base such as cotton wool or on scale-free metal layers. Support structures are not required because the shape stability is ensured due to the previous crystallization of the starting powder.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Dispersion Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Plastic & Reconstructive Surgery (AREA)
  • Molecular Biology (AREA)
  • Dentistry (AREA)
  • Glass Compositions (AREA)
  • Dental Prosthetics (AREA)
  • Dental Preparations (AREA)
EP14720971.2A 2013-05-03 2014-04-30 Verfahren zur herstellung eines rohlings sowie rohling Active EP2991610B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16189583.4A EP3124010A1 (de) 2013-05-03 2014-04-30 Rohling und verfahren zu seiner herstellung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310104561 DE102013104561A1 (de) 2013-05-03 2013-05-03 Verfahren zur Herstellung eines Rohlings sowie Rohling
PCT/EP2014/058920 WO2014177659A1 (de) 2013-05-03 2014-04-30 Verfahren zur herstellung eines rohlings sowie rohling

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP16189583.4A Division-Into EP3124010A1 (de) 2013-05-03 2014-04-30 Rohling und verfahren zu seiner herstellung
EP16189583.4A Division EP3124010A1 (de) 2013-05-03 2014-04-30 Rohling und verfahren zu seiner herstellung

Publications (2)

Publication Number Publication Date
EP2991610A1 EP2991610A1 (de) 2016-03-09
EP2991610B1 true EP2991610B1 (de) 2019-12-18

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EP14720971.2A Active EP2991610B1 (de) 2013-05-03 2014-04-30 Verfahren zur herstellung eines rohlings sowie rohling
EP16189583.4A Withdrawn EP3124010A1 (de) 2013-05-03 2014-04-30 Rohling und verfahren zu seiner herstellung

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US (1) US9737465B2 (OSRAM)
EP (2) EP2991610B1 (OSRAM)
JP (1) JP6542200B2 (OSRAM)
KR (1) KR102055112B1 (OSRAM)
CN (1) CN105377216B (OSRAM)
AU (1) AU2014261405B2 (OSRAM)
BR (1) BR112015027765B1 (OSRAM)
CA (1) CA2911284C (OSRAM)
DE (1) DE102013104561A1 (OSRAM)
ES (1) ES2770505T3 (OSRAM)
RU (1) RU2696587C2 (OSRAM)
WO (1) WO2014177659A1 (OSRAM)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA3008306A1 (en) * 2014-12-22 2016-06-30 Dental Wings Inc. Pre-forms and methods for using same in the manufacture of dental prostheses
CN104609730A (zh) * 2014-12-31 2015-05-13 东莞市爱嘉义齿有限公司 牙齿修复材料及其制备方法和应用
DE102015108171A1 (de) * 2015-05-22 2016-11-24 Degudent Gmbh Verfahren zur Erhöhung der Festigkeit von aus Lithiumsilikat-Glaskeramik bestehendem Formkörper
DE102015108173A1 (de) * 2015-05-22 2016-11-24 Degudent Gmbh Verfahren zur Erhöhung der Festigkeit von aus Lithiumsilikat-Glaskeramik bestehendem Formkörper
KR101847522B1 (ko) * 2015-08-21 2018-04-11 주식회사 바이오알파 경조직 결손부 대체용 의용재료의 제조방법 및 이로부터 제조된 의용재료
WO2017067909A1 (en) * 2015-10-19 2017-04-27 Vita Zahnfabrik H. Rauter Gmbh & Co. Kg Process for producing a workpiece with low translucency
FR3044890B1 (fr) * 2015-12-10 2018-04-27 Societe De Recherches Techniques Dentaires - Rtd Disque usinable par cfao pour la fabrication d'inlay core fibres
DE102016106370A1 (de) * 2016-03-23 2017-09-28 Degudent Gmbh Verfahren zur Herstellung eines eingefärbten Rohlings sowie Rohling
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KR20160010865A (ko) 2016-01-28
RU2696587C2 (ru) 2019-08-05
CA2911284A1 (en) 2014-11-06
EP3124010A1 (de) 2017-02-01
EP2991610A1 (de) 2016-03-09
JP6542200B2 (ja) 2019-07-10
DE102013104561A1 (de) 2014-11-06
US20160113845A1 (en) 2016-04-28
RU2015151586A (ru) 2017-06-08
KR102055112B1 (ko) 2019-12-13
WO2014177659A1 (de) 2014-11-06
CN105377216A (zh) 2016-03-02
CA2911284C (en) 2019-07-23
AU2014261405A1 (en) 2015-11-26
US9737465B2 (en) 2017-08-22
BR112015027765B1 (pt) 2020-08-18
JP2016522779A (ja) 2016-08-04
BR112015027765A2 (pt) 2017-08-29
ES2770505T3 (es) 2020-07-01
AU2014261405B2 (en) 2018-11-15

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